That might sound good to you, but not to your users. Please put it in a sandbox and on the MAS. There is no reason for a calculator to _not_ run in a sandbox. Discoverability and sales will probably improve as well on the App Store. I for one, would purchase in an instance, whereas now the only purchase option is a paddle (sic) preorder button.
> Btw all recent updates are notarized.
That is nice.